The Zyrythian backsword is the strongest two-handed sword in the game, succeeding the Godsword. It, like Barrows sets, has a set effect, known as 'Clorke's Rage', which increases the user's accuracy and strength depending on how low their prayer points, summoning points and life points are. Strangely, it would be faster to kill Clorke and get the sword as a drop then buy it from another player, due to the fact that the price of the item is almost as high as the limit of stackable items (trying to make this money would take months, possibly years).